TDC1011_15 Datasheet, PDF (33/49 Pages) Texas Instruments – TDC1011 Single Channel Ultrasonic Sensing Analog Front End (AFE) for Level Sensing,Concentration Sensing Applications

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TDC1011
SNAS662 – JULY 2015
8.6.1.6 TOF_1 Register (address = 5h) [reset = 0h] (map)
Figure 46. TOF_1 Register
(MSB) 7
6
5
4
3
2
PGA_GAIN
PGA_CTRL LNA_CTRL
LNA_FB
R/W-0h
R/W-0h
R/W-0h
R/W-0h
1
0 (LSB)
TIMING_REG[9:8]
R/W-0h
LEGEND: R/W = Read or write; R = Read only; R/W1C = Read or write 1 to clear
Table 9. TOF_1 Register Field Descriptions
Bit Field
Type
Reset
Description
[7:5] PGA_GAIN
R/W
0h
PGA gain
0h: 0 dB (default)
1h: 3 dB
2h: 6 dB
3h: 9 dB
4h: 12 dB
5h: 15 dB
6h: 18 dB
7h: 21 dB
[4]
PGA_CTRL
R/W
0h
PGA control
0h: Active (default)
1h: Bypassed and powered off
[3]
LNA_CTRL
R/W
0h
LNA control
0h: Active (default)
1h: Bypassed and powered off
[2]
LNA_FB
R/W
0h
LNA feedback mode
0h: Capacitive feedback (default)
1h: Resistive feedback
[1:0] TIMING_REG[9:8]
R/W
0h
TIMING_REG field's 2 most-significant bits (see Standard TOF
Measurement and Standard TOF Measurement with Power
Blanking)
0h: 0 (default)
8.6.1.7 TOF_0 Register (address = 6h) [reset = 0h] (map)
Figure 47. TOF_0 Register
(MSB) 7
6
5
4
3
2
TIMING_REG[7:0]
R/W-0h
LEGEND: R/W = Read or write; R = Read only; R/W1C = Read or write 1 to clear
1
0 (LSB)
Bit Field
[7:0] TIMING_REG[7:0]
Table 10. TOF_0 Register Field Descriptions
Type
Reset
Description
R/W
0h
TIMING_REG field's 8 least-significant bits (see Standard TOF
Measurement and Standard TOF Measurement with Power
Blanking)
0h: 0 (default)
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